Dear Exchange Point members and operators, I have a small inquiry today: could you please have a look at the low-order bit distribution of (Cisco) router MAC addresses at your exchange point(s) and tell me the result ? Background: port-grouping algorithms (like Cisco FastEtherChannel on Cat5xxx) on switches tend to use low-order bits of MAC addresses (XOR of source/dest, or similar) for load-sharing purposes. Now it turned out, probably because "Vienna is different", that more than 90% of all (Cisco) router FastEthernet interfaces connected to the Vienna Internet eXchange have MAC addresses ending with Hex 0 !!! And nope, it's not Halloween today (for those who understand German ;-) This of course does break port-group load-balancing on any such switch with only routers connected ... :-( Any ideas, similar experiences, workarounds (other than to assign MAC addresses to exchange point routers) ? Kind regards CP --- ---------------------------------------------------------------------- --- --- Christian Panigl : Vienna University Computer Center - ACOnet --- --- VUCC - ACOnet - VIX : -------------------------------------------- --- --- Universitaetsstrasse 7 : Mail: Panigl@CC.UniVie.ac.at (CP8-RIPE) --- --- A-1010 Vienna / Austria : Tel: +43 1 4277-14032 (Fax: -9140) --- --- ---------------------------------------------------------------------- ---